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arXiv 1801.01893hep-ph
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最小戈德斯通希格斯粒子的高能命运

The high energy fate of the minimal Goldstone Higgs

Helene Gertov, Sofie Gregersen, Francesco Sannino, Kimmo Tuominen

摘要:

我们考虑一个极小模型,其中希格斯玻色子作为一个基本的伪Nambu-Goldstone玻色子出现。该模型基于一个具有全局SO(5)/SO(4)对称性的扩展标量扇区。为了获得正确的电弱对称性破缺模式,该模型被增广与一个明确的对称性破缺项或一个额外的单重标量场。我们分别考虑这两种可能性。我们在电弱尺度下用已知的粒子谱拟合模型,并利用重整化群外推到高能。我们发现,该模型可以保持稳定和微扰的普朗克尺度提供的重超越标准模型标量态的质量在一个狭窄的间隔约3 TeV。

英文摘要:

We consider a minimal model where the Higgs boson arises as an elementary pseudo-Nambu-Goldstone boson. The model is based on an extended scalar sector with global SO(5)/SO(4) symmetry. To achieve the correct electroweak symmetry breaking pattern, the model is augmented either with an explicit symmetry breaking term or an extra singlet scalar field. We consider separately both of these possibili- ties. We fit the model with the known particle spectrum at the electroweak scale and extrapolate to high energies using renormalization group. We find that the model can remain stable and perturbative up to the Planck scale provided that the heavy beyond Standard Model scalar states have masses in a narrow interval around 3 TeV.

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